One of the top complaints of Battlefield 3 is the sun glare. Considered to be one of the most powerful weapons in BF3 (next to the Bad Luck stick), and wielded by none other than DICE themselves, the sun has had a significant impact on how players enjoy BF3. Therefore, the big question is, will the sun again be an overpowered supernova in Battlefield 4? The following image compares the sun from BF3 (top) to that from recently released gameplay footage of BF4.
As you can tell, there is a significant difference between the two. The BF4 sun is still fairly strong (perhaps your soldier wasn’t issues sunglasses?), but at least you can still see your own weapon, not to mention the surrounding buildings and such. Granted, the BF4 image is after the tower falls, and therefore the dust cloud could be affecting the intensity of the sun, but I really think they have made an improvement here.